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What is this?

1K views 6 replies 3 participants last post by  dward 
#1 ·
Came with my QF 680 carb in the box.



Tks!
 
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#3 ·
Thanks Jeff! Stupid question, what do I do with it? When I look at the carb, I don't see where it would attach.
 
#5 ·
No. The PCV will run to the carb base plate; it has to have a vacuum source. The nipple gets installed onto the air cleaner base inside of where the filter rests. You run a hose from it to the breather so that the incoming crankcase air is filtered. Here's the engine I put together for a carb'd roadster that I built for a customer---note that hose running from the oil fill/breather cap to the air cleaner base:



Cheers,
Jeff
 
#6 ·
Got it, thanks Jeff!
 
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